SWISSTEN adapter with four USB outputs and a total power of 20W and STMART IC technology. The charger can charge up to 4 devices at a time, making the adapter suitable for office, vacation, home, etc.… SMART IC: Thanks to SMART IC technology, the charging of connected devices is optimized. Connect multiple devices: When charging multiple devices, the output power of each USB port is distributed according to the specification.   Specifications: Input: AC 100-240V, 50-60Hz, 0.65A Output: 1xUSB 5V / 2.4A 2xUSB 5V / 2A 3xUSB 5 V / 1.33 A 4xUSB 5V1A